I have added some isOnScreen logic to fl_BlockLayout::redrawUpdate() and fp_Line::redrawUpdate(), the latter now returns true if the line is on screen and false if not and redraw is only done in the former case.
I would like to do something similar to the format mechanism, but my early effors seem to indicate that it will not be that straight forward. files: fl_BlockLayout.cpp, fp_Line.h/cpp Tomas
